Respuesta :

This is an arithmetic progression.

The first term is a and the common difference is 1.

The n-th term is

[tex]T_{\N}=a+(n-1)d[/tex][tex]\begin{gathered} T_N=16+(n-1)1 \\ T_N=16+n-1 \\ T_N=15+n \end{gathered}[/tex]

To find the 20th term, put in 20 in place of n

[tex]T_{20}=15+20\text{ = 35}[/tex]

The 20th term is 35